For this time of the year, Ontario is experiencing slightly cooler temperatures, gently falling below the seasonal average.
According to the long-range forecast, temperatures are expected to be 27.4 °C which is -1.7 °C lower than the historical average.
Select a month and click on a day for more information:
Thursday
Oct 1
29° / 15°
Friday
Oct 2
30° / 16°
Saturday
Oct 3
30° / 17°
Sunday
Oct 4
31° / 17°
Monday
Oct 5
32° / 18°
Tuesday
Oct 6
31° / 17°
Wednesday
Oct 7
32° / 18°
Thursday
Oct 8
30° / 17°
Friday
Oct 9
30° / 17°
Saturday
Oct 10
30° / 18°
Sunday
Oct 11
26° / 14°
Monday
Oct 12
27° / 14°
Tuesday
Oct 13
24° / 14°
Wednesday
Oct 14
24° / 13°
Thursday
Oct 15
25° / 13°
Friday
Oct 16
28° / 13°
Saturday
Oct 17
26° / 14°
Sunday
Oct 18
28° / 14°
Monday
Oct 19
29° / 15°
Tuesday
Oct 20
30° / 15°
Wednesday
Oct 21
28° / 15°
Thursday
Oct 22
23° / 13°
Friday
Oct 23
23° / 12°
Saturday
Oct 24
24° / 14°
Sunday
Oct 25
22° / 13°
Monday
Oct 26
23° / 12°
Tuesday
Oct 27
26° / 13°
Wednesday
Oct 28
25° / 14°
Thursday
Oct 29
26° / 14°
Friday
Oct 30
25° / 14°
Saturday
Oct 31
23° / 12°
Ontario 30 days weather forecast
Check out our estimated 30 days weather forecast for Ontario, this data is based on the average weather in Ontario in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Ontario next to the desired date.